Updated timelines

Ali & Nagi: J.K. Rowling
Ali & Nagi: J.K. Rowling timeline
alejandro magno
alejandro magno timeline
Science
Albert Einstein
Albert Einstein timeline
Miami Heat
History of Nickelodeon
History of Nickelodeon timeline
Costumbres y Tradiciones costarricenses
Riley Lynn Coleman's Timeline
Winter sports
Winter sports timeline
ramirez&cervantes-Tex Rev5th
Road to Revolution-Chris A.
The History of Hip-Hop in the Media
The History of Hip-Hop in the Media timeline
Generalidades
lomeli&villazana-Tex Rev5th
National Holidays
Holidays